:root {
  --bg: #090909;
  --wash: #111111;
  --card: #141414;
  --ink: #f5f5f5;
  --muted: #a3a3a3;
  --soft: #d4d4d4;
  --line: #2a2a2a;
  --hair: #333;
  --gold: #f5f5f5;
  --price: #fff;
  --danger: #ffb4a8;
  --ok: #b6f0cb;
  --max: 1080px;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  color-scheme: dark;
  line-height: 1.5;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-height: 100vh; background: var(--bg); }
img, svg { display: block; }
button, input { font: inherit; color: inherit; }
a { color: #fff; }
a:hover { color: #fff; }

.skip {
  position: absolute;
  left: 12px;
  top: -40px;
  background: #fff;
  color: #111;
  padding: 8px 12px;
  z-index: 20;
}
.skip:focus { top: 12px; }

.wrap { width: min(var(--max), calc(100% - 32px)); margin: 0 auto; }
.narrow { width: min(760px, calc(100% - 32px)); }

.header {
  background: rgba(9, 9, 9, 0.92);
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}
.header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 72px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  text-decoration: none;
  font-size: 22px;
  font-weight: 560;
  letter-spacing: 0.08em;
  text-transform: lowercase;
}
.brand-mark {
  height: 40px;
  width: auto;
  display: block;
}
.nav { display: flex; gap: 4px; }
.nav a {
  color: var(--soft);
  text-decoration: none;
  font-size: 15px;
  font-weight: 600;
  padding: 10px 12px;
  border-radius: 8px;
}
.nav a[aria-current="page"] { color: #111; background: #fff; }

.return-bar {
  padding: 10px 16px;
  text-align: center;
  font-size: 14px;
  background: #111;
  color: var(--soft);
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--line);
}
.return-bar[hidden] { display: none; }
.return-bar a { color: #fff; font-weight: 700; }
.return-bar button {
  background: none;
  border: 0;
  color: var(--soft);
  text-decoration: underline;
  cursor: pointer;
  padding: 0;
}

.hero { padding: 36px 0 28px; }
.hero-grid { display: grid; gap: 22px; }
.eyebrow {
  margin: 0 0 8px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-size: 12px;
  color: var(--muted);
  font-weight: 700;
}
.hero h1 {
  margin: 0 0 12px;
  font-size: 44px;
  font-weight: 560;
  letter-spacing: -0.04em;
  line-height: 1.02;
}
.lede { margin: 0 0 16px; font-size: 18px; color: var(--soft); max-width: 38rem; }
.ticks { margin: 0; padding-left: 18px; color: var(--soft); }
.ticks li { margin: 6px 0; }
.pay-line { margin: 18px 0 0; color: var(--muted); }
.pay-line span { color: #fff; font-weight: 700; }

.card {
  background: var(--card);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 16px;
  text-align: center;
  padding: 8px 16px 20px;
}
.card-kicker {
  margin: 16px 0 0;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 12px;
  font-weight: 700;
  color: var(--muted);
}
.card h2 {
  margin: 8px 0 0;
  font-size: 28px;
  font-weight: 560;
  letter-spacing: 0.08em;
}
.price { margin: 8px 0 4px; color: var(--price); line-height: 1; }
.price sup { font-size: 28px; font-weight: 500; vertical-align: top; top: 8px; position: relative; }
.price span { font-size: 64px; font-weight: 650; letter-spacing: -0.04em; }
.price sub {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.features { list-style: none; margin: 8px 0 0; padding: 0; }
.features li {
  position: relative;
  margin: 0;
  padding: 13px 8px;
  color: var(--soft);
}
.features li::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 52%;
  height: 1px;
  background: var(--hair);
  transform: translateX(-50%);
}
.features li:last-child::after { display: none; }
.stock { margin: 14px 0 0; font-size: 13px; font-weight: 750; letter-spacing: 0.12em; }
.stock.in { color: var(--ok); }
.stock.out { color: var(--danger); }
.pay-label { margin: 8px 0; color: var(--muted); }
.pay-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.pay {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 52px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #0c0c0c;
  color: #fff;
  cursor: pointer;
  font-weight: 650;
}
.pay img { width: 28px; height: 28px; }
.pay:hover, .pay:focus-visible { border-color: #fff; }
.pay:disabled { opacity: 0.45; cursor: not-allowed; }
.card-note { color: var(--danger); font-size: 14px; min-height: 0; margin: 10px 0 0; }

.how { padding: 28px 0 12px; }
.faq { padding: 28px 0 56px; }
.title {
  text-align: center;
  font-size: 32px;
  font-weight: 600;
  letter-spacing: -0.03em;
  margin: 0 0 8px;
}
.subtitle { text-align: center; color: var(--muted); margin: 0 0 24px; font-size: 18px; }
.steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.steps li {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 12px;
  align-items: start;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px;
}
.steps span {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: #fff;
  color: #111;
  font-weight: 750;
}
.steps h3 { margin: 0 0 4px; font-size: 18px; }
.steps p { margin: 0; color: var(--muted); }

.faq-list { display: grid; gap: 10px; }
details {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0 16px;
  background: var(--card);
}
summary {
  cursor: pointer;
  font-size: 17px;
  font-weight: 650;
  padding: 16px 0;
  list-style: none;
}
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; float: right; color: #fff; font-weight: 500; }
details[open] summary::after { content: "–"; }
details p { margin: 0 0 16px; color: var(--muted); }

.footer { border-top: 1px solid var(--line); padding: 28px 0 calc(28px + env(safe-area-inset-bottom)); }
.footer-inner { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; color: var(--muted); }
.footer a { color: #fff; font-weight: 650; text-decoration: none; }

.panel { width: min(640px, calc(100% - 32px)); margin: 28px auto 64px; }
.panel.wide { width: min(960px, calc(100% - 32px)); }
.panel h1 { font-size: 34px; letter-spacing: -0.03em; margin: 0 0 8px; }
.lead { color: var(--muted); margin-top: 0; }
.invoice, .sheet, .save {
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 18px;
  background: var(--card);
}
.save { margin-bottom: 14px; }
.amount { font-size: 48px; font-weight: 650; letter-spacing: -0.04em; margin: 4px 0; color: #fff; }
.row, .field {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  padding: 12px 0;
  border-top: 1px solid var(--line);
}
.row span, .field span { color: var(--muted); }
.field { align-items: flex-start; flex-wrap: wrap; }
.field b { font-weight: 650; word-break: break-all; }
.actions { display: grid; gap: 10px; margin-top: 16px; }
.btn {
  min-height: 52px;
  border-radius: 10px;
  border: 1px solid #fff;
  background: #fff;
  color: #111;
  font-weight: 750;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 16px;
}
.btn:hover { background: transparent; color: #fff; }
.btn.secondary { background: transparent; color: #fff; }
.btn:disabled { opacity: 0.55; cursor: wait; }
.copy {
  border: 1px solid #3a3a3a;
  background: transparent;
  color: #fff;
  border-radius: 999px;
  min-height: 36px;
  padding: 0 12px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 700;
}
.copy:hover { border-color: #fff; }
.fine { color: var(--muted); font-size: 14px; }
.error { color: var(--danger); font-weight: 650; }

.methods { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin: 12px 0; }
.methods button, .packs button, .chip {
  min-height: 48px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #0c0c0c;
  color: #fff;
  cursor: pointer;
  font-weight: 650;
}
.methods button[aria-pressed="true"], .packs button[aria-pressed="true"] {
  border-color: #fff;
  background: #fff;
  color: #111;
}
.packs { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
label { display: block; font-weight: 700; margin: 14px 0 6px; }
input[type="text"], input[type="number"] {
  width: 100%;
  min-height: 52px;
  border-radius: 10px;
  border: 1px solid var(--line);
  padding: 0 12px;
  background: #0c0c0c;
  color: #fff;
}
input:focus { outline: 2px solid #fff; border-color: transparent; }

.line-head { display: flex; justify-content: space-between; gap: 12px; align-items: end; }
.msisdn { font-size: 30px; font-weight: 650; letter-spacing: -0.03em; margin: 0 0 8px; }
.qr {
  width: min(240px, 70vw);
  height: auto;
  margin: 8px auto;
  background: #fff;
  border-radius: 12px;
  padding: 8px;
}
.mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
  word-break: break-all;
  background: #0c0c0c;
  border-radius: 10px;
  padding: 10px;
  margin: 8px 0 0;
}
.dock {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin: 4px 0 16px;
}
.stats { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin: 12px 0; }
.stat { background: #0c0c0c; border: 1px solid var(--line); border-radius: 12px; padding: 12px; }
.stat b { display: block; font-size: 18px; }
.stat span { color: var(--muted); font-size: 13px; }

.desk-grid { display: grid; gap: 10px; grid-template-columns: 1fr 1fr; }
.desk-card { background: #0c0c0c; border: 1px solid var(--line); border-radius: 12px; padding: 14px; }
.desk-card strong { display: block; font-size: 28px; letter-spacing: -0.03em; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--line); vertical-align: top; }
.token { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 12px; color: #fff; }

@media (min-width: 880px) {
  .hero { padding: 64px 0 48px; }
  .hero-grid {
    grid-template-columns: 1.15fr 0.85fr;
    grid-template-areas: "copy card" "more card";
    align-items: center;
    gap: 28px 40px;
  }
  .hero-copy { grid-area: copy; }
  .card { grid-area: card; }
  .hero-more { grid-area: more; }
  .hero h1 { font-size: 68px; }
  .steps { grid-template-columns: 1fr 1fr; }
  .title { font-size: 44px; }
  .desk-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 420px) {
  .nav a { padding: 10px 8px; font-size: 14px; }
  .brand { font-size: 18px; letter-spacing: 0.04em; }
  .brand-mark { height: 34px; }
  .hero h1 { font-size: 38px; }
  .price span { font-size: 56px; }
  .wrap { width: min(var(--max), calc(100% - 24px)); }
}